git-mktag(1) Manual Page

NAME

SYNOPSIS

DESCRIPTION

Reads a tag contents on standard input and creates a tag object
that can also be used to sign other objects.

The output is the new tag’s <object> identifier.

Tag Format

A tag signature file has a very simple fixed format: four lines of

object <sha1>
type <typename>
tag <tagname>
tagger <tagger>

followed by some optional free-form message (some tags created
by older git may not have tagger line). The message, when
exists, is separated by a blank line from the header. The
message part may contain a signature that git itself doesn’t
care about, but that can be verified with gpg.